dam4227 Posted October 27, 2010 Share Posted October 27, 2010 Hello, I am powering my build, which includes a Gigabyte 470 GTX Super OverClock, with an HX850W PSU from Corsair. I am trying to overclock my graphic card. It was stable under OCCT-GPU at 770 Mhz, with a voltage of 1,012V. The temperature was reaching 89 degrees, which is still acceptable for that card. OCCT-GPU started giving me errors at 775 Mhz, so I increased the voltage to the next available increment with MSI afterburner, which was 1,025V. After running OCCT-GPU for maybe 30 seconds, the graphic card just shut down. The temperature was at 89 degrees at that point. Whenever I try that same experience again, it inevitably gives the same result. When I say shut down, I mean that the monitor loses signal. Besides that, the computer seems to continue working and the keyboard LEDs are still responsive. After that, I need to shut down the computer by keeping the power button pressed for a few seconds. Pressing the reset button doesn't enable the graphic card to "re-post". From what I could gather on the internet, it seems to be symptomatic of not enough power being delivered to the graphic card. Right now, the two captive dual PCI-E 8 pins (6+2) cables from the PSU are plugged into my graphic card's 2 PCI-E 6 pins. Is this an ideal setup? or shall I use two modular PCI-E cables instead? I have a multimeter at home and maybe I could use it to measure some values, but I do not really know what I am supposed to be looking out for or how to do it. I hope someone can help me! Thank you for reading me PS: if that can help, my processor, an i7 950 is overclocked at 4 Ghz, using a 23x174 configuration. My Vcore is 1.23V, QPI/VTT is 1.22V and IOH Core is 1.2V, the other voltages are at default values. My ram is running at 1740 Mhz, with a voltage of 1.64V and timings of 8-8-8-24 2T. Link to comment Share on other sites More sharing options...
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